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H. S. HASSELQUIST.

FOUNTAIN PEN.

APPLICATION FILED 11m: 25. 1911.

Patented Dec. 23, 1919.

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m WED STATES PATE rroeo s. rrnssnLouIsnoF orrIcAeo, ILLINOIS, nssrenonT0 ri-rn WAI-IL oorrranr, or WILMINGTON, DELAWARE, n conronarron orpnnawann rounrarn-rnn.

Application filed June 25, 1917.

To all whom it may concern:

Be it known that I, Huoo S. HAssnL Urs'r, a citizen of the UnitedStates, and resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inFountain-Pens, of which the following is a specification.

My invention is an improved fountain pen, particularly of the class inwhich there is a rubber sack which is deflated by means of a presser baractuated by a lever pivoted in the pen casing and the object of myinvention is to provide an improved combined spring and stop for thelever actuating said presser bar.

My invention will be best understood by reference to the accompanyingfigures, of which l Figure 1 is a longitudinal section of my improvedpen showing the sack and the lever used to deflate the same in theirnormal positions;

Fig. 2 is a longitudinal section showing the lever operated and the sackdeflated;

Fig. 3 is a detail of the mounting of the spring and lever, and

Fig. 4 is a section through the line 1- 1 of Fig. 1.

Similar numbers of reference refer to like parts throughout all thefigures.

Referring particularly to Figs. 1, 2 and 3, it will be seen that I haveprovided a pen casing 10, preferably made of hard rubber, into which isscrewed a plug 11, serving as support for a feeding nib 12, having theusual ink channel 13 therein, and the pen nib 14. These parts are allwell known in the art and it is not necessary to further describe them.

The rear end of the plug 11 is provided with a nipple 15, which servesas a support for the sack 16 serving to maintain the ink, and which isusually made of rubber or some elastic material. A presser bar 17 servesto deflate the sack when said bar is acted on by a lever 18, pivotallymounted in a slot 20 in the casing on a pin 19. The prcsser bar 17 isheld in this position with respect to the casing by a spring 28, whichis provided at its rear end with a mounting which frictionally engagesthe interior of said casing, thereby holding said spring and attachedbar in its position. The spring mounted. presser bar is old in the art,an in- Specification of Letters Patent.

Patented lUec. 2 31, rate.

Serial No. 176,815.

stance being shown in the patent to Hamih ton, No. 7 81,649, of February7, 1905.

The lever 18 is made of U section, and between the wings of the U ismounted a short block 21, which may be riveted to the lever or held inposition in any suitable manner. Engaging with the block 21 is a spring22, which is held in the slot 20 by a pin 23 and has a tail 24:, whichabuts against the end of the slot 20. The normal adjustment of thespring is such that when the parts are in the position shown in Fig. 3,the spring 22 will have a tension which, acting on the flat surface ofthe block 21, will hold the lever 18 securely in its closed position.lVhen the lever 18 is thrown to its open position, as shown in Fig. 2,it is obvious that the spring 22 will act in conjunction with the inneredge of the block 21, and will serve the double purpose of holding thelever 18 securely in an open position and of providing a stop to preventfurther motion of said lever.

The presser bar 17 is preferably made of corrugated section in itscenter (see Fig. 1) to provide a suitable bearing surface for the lever18, thus preventing displacement of the bar when it is acted on by thelever.

Many changes and modifications may be made in the precise structureherein disclosed without departure from the spirit of my invention,since 1 claim:

1. In a fountain pen, the combination of a casing, a slot in saidcasing, a lever pivoted. in said slot, a block mounted on said lever,and a spring, one end of which is mounted in the casing and the otherend of which by its engagement with said block serves to maintain saidlever firmly either in an open or closed position.

2. In a fountain pen, the combination of a pen casing. a lever pivotedin said casing, said lever having a ll section, a block mounted withinsaid section, and. a spring, one end of which is mounted in said casing,and the other end by its engagement with said block serves to hold saidlever firmly in either an open or closed position.

3. In a fountain pen, the combination of a casing, a slot in saidcasing, a pin in said slot, a spring mounted on said pin and having anabutting portion engaging said casing, a lever also pivoted in saidslot,

and means carried by said lever and engaging the free end of said springto hold said lever firmly in an open or closed position.

4. In a fountain pen, the combination of a casing, aslot in said casing,a pinin said slot, a lever pivotally mounted in said slot,

a springaetuated presser bar adapted to be operated by said lever, andmeans mounted on said pin to firmly hold said lever in 10 either itsopen or closed position.

In Witness whereof I have hereunto subscribed my name.

HUGO S. HASSELQUIST.

